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Aleksei
Pronounced ah-lek-SAY /ˌɑ.lɛkˈseɪ/Medium
Meaning: Russian form of Alexis — from Greek alexo, 'to defend, to help' — 'defender, helper'Medium
Popularity in the U.S. · SSA data
U.S. births per year (Social Security Administration, 1880–present). Pink marker = peak year.
SSA data updated May 2026. How we source & verify this data.
History & Origin
Aleksei is the Russian form of Alexis — from Greek alexo, 'to defend, to help' — 'defender, helper'. A crisp, classic name across Russia (Tsar Aleksei; the tragic tsarevich Alexei Romanov; the saint Alexis); nickname Alyosha or Lyosha (said 'ah-lek-SAY').
In the U.S. it appears in Russian families. Rare, defender-and-helper at the root, and classic.
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Frequently Asked
What does the name Aleksei mean?
Aleksei is the Russian Alexis — Greek 'defender, helper'.
How do you pronounce Aleksei?
It's said ah-lek-SAY /ˌɑ.lɛkˈseɪ/ — three syllables, stress on the last.
Is Aleksei a boy or girl name?
Aleksei is a boy's name.
How popular is Aleksei?
Aleksei is a rare name in the U.S.